GB1128608A - Centrifugal casting method and apparatus - Google Patents

Centrifugal casting method and apparatus

Info

Publication number
GB1128608A
GB1128608A GB5422365A GB5422365A GB1128608A GB 1128608 A GB1128608 A GB 1128608A GB 5422365 A GB5422365 A GB 5422365A GB 5422365 A GB5422365 A GB 5422365A GB 1128608 A GB1128608 A GB 1128608A
Authority
GB
United Kingdom
Prior art keywords
mould
core
tyre
bead
space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5422365A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dunlop Co Ltd
Original Assignee
Dunlop Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dunlop Co Ltd filed Critical Dunlop Co Ltd
Publication of GB1128608A publication Critical patent/GB1128608A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0679—Centrifugal casting specially adapted for tyres or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/10—Feeding of the material to be moulded, e.g. into a mould cavity of several materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/04—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles using movable moulds not applied
    • B29C39/06—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles using movable moulds not applied continuously movable, e.g. along a production line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/04—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles using movable moulds not applied
    • B29C39/08—Introducing the material into the mould by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/34—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station
    • B29C33/36—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station continuously movable in one direction, e.g. in a closed circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof

Abstract

1,128,608. Moulding tyres. DUNLOP CO. Ltd. 21 Dec., 1965 [31 Dec., 1964], No. 54223/65. Heading B5A. Tyres are centrifugally cast in a rotatable mould 13a, 13b within which is located an inflatable core 26; moulding material is fed to the space between the core and mould from hoppers 41 containing materials of different physical properties, so that by varying the material fed to the mould space a tyre is produced of material having properties which vary from one region to another. For example, a material which has been centrifuged to form the tyre crown can be left to harden before different materials are fed to the mould to be centrifuged at different speeds with the core inflated to different pressures to form different parts of the tyre sidewall. Tyre bead inserts are placed within the mould space before the mould is brought to the casting station. Alternatively, a tyre carcass with its bead rings in position may be treated in the mould before the casting operation. A circular mould tube 12 rotates about a pedestal 11 and supports a circumferentially spaced set of moulds 13 which are brought in turn to a casting station where the mould is charged. Each mould lower half 13b is secured to a disc 14 rotated by a motor 16 having a drive wheel 15 which, by pivoting the motor, can be brought into and out of engagement with the disc. A cylinder 21 depending and integral with the disc accommodates a piston 22 which carries a bush 23 clamped between the mould halves and attached to the upper bead (27), Fig. 3, (not shown), of the inflatable core. The lower bead of the core is clamped between rings attached to the lower mould half. When the upper mould half is removed and the piston 22 raised the core is axially extended. Pressurizing fluid is supplied to the core through passageway 56 from the cylinder 21, and moulding material is supplied to the mould space through a vertically adjustable nozzle 32, which seals within a recess in the bush 23, and passage (51-55). Each hopper supplies a separate metering device 40 comprising a chamber 42 and a fluid pressure operated ram 43 which forces material to a main cylinder 33 from which the material is forced by a piston 46 extending from a ram 47. In passing to the main cylinder the material is heated in plasticizing passages 45.
GB5422365A 1964-12-31 1965-12-21 Centrifugal casting method and apparatus Expired GB1128608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0046166 1964-12-31

Publications (1)

Publication Number Publication Date
GB1128608A true GB1128608A (en) 1968-09-25

Family

ID=7049539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5422365A Expired GB1128608A (en) 1964-12-31 1965-12-21 Centrifugal casting method and apparatus

Country Status (9)

Country Link
JP (1) JPS49340B1 (en)
BE (1) BE674595A (en)
DE (1) DE1479104C3 (en)
FI (1) FI46819C (en)
FR (1) FR1462055A (en)
GB (1) GB1128608A (en)
MY (1) MY7000029A (en)
NL (1) NL6517010A (en)
SE (1) SE322903B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472340A (en) * 1979-09-12 1984-09-18 Bayer Aktiengesellschaft Method for producing tire-shaped articles from polyurethane multi-component reaction materials
WO1999032270A1 (en) * 1997-12-19 1999-07-01 Rotospeed Limited Method and apparatus for feeding material into a rotating mould
CN114454399A (en) * 2021-12-22 2022-05-10 湖北理工学院 Forming device for computer network connector

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645655A (en) * 1969-04-14 1972-02-29 Firestone Tire & Rubber Co Mold for casting tires
US3751551A (en) * 1971-07-06 1973-08-07 Firestone Tire & Rubber Co Process of centrifugal casting
IT1017288B (en) * 1974-07-19 1977-07-20 Pirelli PNEUMATIC INJECTION MOLDING PROCESS WITH DIFFERENTIATED COMPOUNDS
US3924982A (en) * 1975-02-18 1975-12-09 Firestone Tire & Rubber Co Centrifugal tire casting machine
DE2819015A1 (en) * 1978-04-29 1979-11-08 Bayer Ag TIRES AND THE METHOD OF MANUFACTURING IT
DE2832566A1 (en) * 1978-07-25 1980-02-07 Bayer Ag METHOD FOR PRODUCING HOLLOW BODIES
DE3161140D1 (en) * 1980-01-19 1983-11-17 Bayer Ag Method and apparatus for manufacturing reinforced tyres
NL8001681A (en) * 1980-03-21 1981-10-16 Koorevaar Arie METHOD AND APPARATUS FOR FORMING A WHEEL RIM TIRE
DE3026240C2 (en) * 1980-07-10 1983-09-01 Metzeler Kautschuk GmbH, 8000 München Process for casting tires from a castable elastomer in a closed mold and mold for carrying out such a process
CH652642A5 (en) * 1982-12-20 1985-11-29 Milorad Milisavljevic INSTALLATION FOR THE MANUFACTURE OF AGGLOMERATED, SINTERED, VULCANIZED OR PRESSED ARTICLES.
CN102837383A (en) * 2012-08-08 2012-12-26 苏州工业园区协利塑胶有限公司 Centrifugation fan mould
CN110337358B (en) * 2017-02-28 2022-05-24 科思创德国股份有限公司 Print head, method and system for 3D printing with variable ejection rate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472340A (en) * 1979-09-12 1984-09-18 Bayer Aktiengesellschaft Method for producing tire-shaped articles from polyurethane multi-component reaction materials
WO1999032270A1 (en) * 1997-12-19 1999-07-01 Rotospeed Limited Method and apparatus for feeding material into a rotating mould
CN114454399A (en) * 2021-12-22 2022-05-10 湖北理工学院 Forming device for computer network connector

Also Published As

Publication number Publication date
JPS49340B1 (en) 1974-01-07
NL6517010A (en) 1966-07-04
DE1479104B2 (en) 1974-06-20
FR1462055A (en) 1966-12-09
FI46819B (en) 1973-04-02
MY7000029A (en) 1970-12-31
BE674595A (en) 1966-04-15
DE1479104C3 (en) 1975-02-20
SE322903B (en) 1970-04-20
DE1479104A1 (en) 1969-04-30
FI46819C (en) 1973-07-10

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